4257993 has 8 divisors (see below), whose sum is σ = 5698656. Its totient is φ = 2828000.

The previous prime is 4257991. The next prime is 4258019. The reversal of 4257993 is 3997524.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 4257993 - 2¹ = 4257991 is a prime.

It is a d-powerful number, because it can be written as 4¹¹ + 2³ + 5⁵ + 7² + 9³ + 9³ + 3¹⁰ .

It is not an unprimeable number, because it can be changed into a prime (4257991) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1683 + ... + 3368.

It is an arithmetic number, because the mean of its divisors is an integer number (712332).

Almost surely, 2^4257993 is an apocalyptic number.

It is an amenable number.

4257993 is a deficient number, since it is larger than the sum of its proper divisors (1440663).

4257993 is a wasteful number, since it uses less digits than its factorization.

4257993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5335.

The product of its digits is 68040, while the sum is 39.

The square root of 4257993 is about 2063.4904894377. The cubic root of 4257993 is about 162.0820724205.

The spelling of 4257993 in words is "four million, two hundred fifty-seven thousand, nine hundred ninety-three".